How do I make text visible below a code in a FAQ section?

Store Design
1

Underneath Questions? See Our FAQ here. i cant see the text below. how do i fix this?

Lheilers_0-1657823876093.png
Lheilers_0-1657823876093.png1366×768 103 KB

2

Add the below style at the end of theme.css

.section-subtitle {
    
    line-height: 50px !important;
}
3

i’m getting this error

Lheilers_0-1657825523018.png
Lheilers_0-1657825523018.png1366×768 65.3 KB

4

remove code from theme.css and add into theme.css.liquid